如何从 node.js 打开终端应用程序?

问题描述

我希望能够从终端中运行的node.js程序中打开Vim，创建一些内容，保存并退出Vim，然后抓取内容文件.

I would like to be able to open Vim from node.js program running in the terminal, create some content, save and exit Vim, and then grab the contents of the file.

我正在尝试做这样的事情:

I'm trying to do something like this:

filename = '/tmp/tmpfile-' + process.pid

editor = process.env['EDITOR'] ? 'vi'
spawn editor, [filename], (err, stdout, stderr) ->

  text = fs.readFileSync filename
  console.log text

然而，当它运行时，它只是挂起终端.

However, when this runs, it just hangs the terminal.

我也用 exec 尝试过，得到了相同的结果.

I've also tried it with exec and got the same result.

更新:

由于此过程是通过在带有 readline 运行.我将最新版本的相关部分完全提取到一个文件中.全文如下:

This is complicated by the fact that this process is launched from a command typed at a prompt with readline running. I completely extracted the relevant parts of my latest version out to a file. Here is it in its entirety:

{spawn} = require 'child_process'
fs = require 'fs'
tty = require 'tty'
rl = require 'readline'

cli = rl.createInterface process.stdin, process.stdout, null
cli.prompt()

filename = '/tmp/tmpfile-' + process.pid

proc = spawn 'vim', [filename]

#cli.pause()
process.stdin.resume()

indata = (c) ->
    proc.stdin.write c
process.stdin.on 'data', indata

proc.stdout.on 'data', (c) ->
    process.stdout.write c

proc.on 'exit', () ->
    tty.setRawMode false
    process.stdin.removeListener 'data', indata

    # Grab content from the temporary file and display it
    text = fs.readFile filename, (err, data) ->
        throw err if err?
        console.log data.toString()

        # Try to resume readline prompt
        cli.prompt()

如上所示，它的工作方式是显示几秒钟的提示，然后启动到 Vim，但 TTY 搞砸了.我可以编辑和保存文件，并且内容打印正确.退出时也有一堆垃圾打印到终端，之后 Readline 功能被破坏(没有向上/向下箭头，没有 Tab 完成).

The way it works as show above, is that it shows a prompt for a couple of seconds, and then launches in to Vim, but the TTY is messed up. I can edit, and save the file, and the contents are printed correctly. There is a bunch of junk printed to terminal on exit as well, and Readline functionality is broken afterward (no Up/Down arrow, no Tab completion).

如果我取消注释 cli.pause() 行，那么 Vim 中的 TTY 是可以的，但我卡在插入模式中，并且 Esc 键不不行.如果我点击 Ctrl-C 它会退出子进程和父进程.

If I uncomment the cli.pause() line, then the TTY is OK in Vim, but I'm stuck in insert mode, and the Esc key doesn't work. If I hit Ctrl-C it quits the child and parent process.

推荐答案

您可以从主进程继承 stdio.

You can inherit stdio from the main process.

const child_process = require('child_process')
var editor = process.env.EDITOR || 'vi';

var child = child_process.spawn(editor, ['/tmp/somefile.txt'], {
    stdio: 'inherit'
});

child.on('exit', function (e, code) {
    console.log("finished");
});

此处有更多选项:http://nodejs.org/api/child_process.html#child_process_child_process_spawn_command_args_options

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